Summer's heat, humidity and burning sun take a toll on active bodies. To ensure a safe and healthy theme park visit for everyone, start preparing early. A few days before your trip, increase the amount of water you and your kids normally drink. This helps your bodies stay cool at the park, and makes everyone better able to drink the amount of water they'll need to stay hydrated through all the excitement.
On the day of your visit, apply sunscreen, thoroughly and generously, to every member of your party before you enter the park, and reapply it as needed throughout the day. While your kids will probably want to dash from one ride to the next so they don't miss anything, be sure to take plenty of breaks to rest, drink water and cool off on a shady park bench.